Margaret Wise Brown's tender picture book enacts a child's bedtime anxiety and the reassurance that parental love provides, as a little bunny announces plans to run away and his mother calmly explains how she will always find him. 'If you run away,' says the mother, 'I will run after you. For you are my little bunny.' The bunny proposes transformations—becoming a fish, a rock, a bird, a boat—and each time his mother imagines how she will transform herself to bring him home. Clement Hurd's illustrations alternate between black-and-white scenes of mother and bunny talking and full-color spreads showing their imagined adventures. The rhythm of call and response mirrors the rhythms of early childhood conversation, when children test limits through hypotheticals and need repeated reassurance that love is unconditional. Brown understood that children need to imagine independence before they're ready for it, and that the possibility of running away is only safe when matched by certainty of being pursued. The book ends with the bunny deciding to stay and be a little bunny, having received the confirmation he needed. This deceptively simple story has comforted anxious children for generations, its premise acknowledging the fantasy of escape while its resolution affirms the security of belonging. Parents reading this book participate in its ritual of reassurance, their very presence proving the mother bunny's point.